Here's something I've not come across before. I've currently got Pirelli Angel GT's fitted. They are at about 10k on the pair. The front is measuring approximately 2-2.5mm of tread left, so is about done. The rear is still measuring approx. 5.5mm tread left (it's the A spec version). I've never encountered such un-even wear with a pair of tyres before, and have always replaced as a set. With so much left on the rear, I'm reluctant to replace it yet, so, what you say? Am I going to die a fiery death putting a new front only on at this stage and running new front, worn rear? Who has some tyre knowledge of this scenario they can share?